No exploitation reportedFix available

CVE-2021-27021

Q: Is CVE-2021-27021 actively exploited?

Active exploitation of CVE-2021-27021 has not been confirmed. Its EPSS score was 1.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2021-27021?

CVE-2021-27021 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2021-07-20
Fixed in7.8.0 · 6.23.0
WeaknessCWE-1027 · CWE-89

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A flaw was discovered in Puppet DB, this flaw results in an escalation of privileges which allows the user to delete tables via an SQL query.

Timeline

dates in UTC

2021-07-2011:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-27021?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-27021?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Puppet

Branch	Affected	Fixed in	Source
7.x	≥ 7.7.0, < 7.8.0	7.8.0	NVD
6.23	< 6.23.0	6.23.0	NVD

Puppet puppet enterprise

Branch	Affected	Fixed in	Source
2021.x	≥ 2021.0.0, < 2021.2.0	2021.2.0	NVD
2019.8	< 2019.8.7	2019.8.7	NVD

Puppet puppetdb

Branch	Affected	Fixed in	Source
7.x	≥ 7.0.0, < 7.4.1	7.4.1	NVD
6.17	< 6.17.0	6.17.0	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Puppet to 7.8.0 · 6.23.0

Advisories and patches

puppet.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.18.8read 2026-10-23
NVDCVSS 2.06.5read 2026-10-23
CNAweakness (CWE)CWE-1027read 2026-10-23
NVDweakness (CWE)CWE-89read 2026-10-23
FIRST EPSSEPSS score1.3 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published: 2021-07-20
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-27021?

A flaw was discovered in Puppet DB, this flaw results in an escalation of privileges which allows the user to delete tables via an SQL query.

Is CVE-2021-27021 actively exploited?

Active exploitation of CVE-2021-27021 has not been confirmed. Its EPSS score was 1.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-27021?

CVE-2021-27021 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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